Nice work, though I have some things to pick at.
I think it's too dark, for a happy cute abstract wall she should be lighter
and so should the background. The vector is too blurred as well for this type
of background, I notice the blurrness is common with Yoru's vectors. You don't have
to blur so much to get it to look smooth, sharpness is not bad, don't be afraid to use it.
And for Yamaro's background's the vectors have to be sharp since his effects and such are sharp and clean. You
should've made a new vector and not used that one.
Not a bad wall, just I think you both need to learn more about each others
elements next time you decied to collab. Other than all that, nice job.